*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  ul{
    list-style: none;
  }
  /* 统一组件代码 */
  input[type="text"]{
    width: 100%;
    flex:1;
    margin-right: 10px;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
    &:focus{
      outline: none;
      border-color: #007bff;
    }
    &::placeholder{
      color: #ccc;
    }
  }
   
    button{
      padding: 5px 10px;
      background-color: #007bff;
      color: #fff;
      border: none;
      border-radius: 5px;
      cursor: pointer;
  }
  
  .line{
    text-decoration: line-through;
  }
  
  
  .container{
    width: 400px;
    margin: 50px auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 10px;
  }
  .container h3{
    font-size: 24px;
    text-align: center;
    margin-bottom: 20px;
  }
  .container .addtask{
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
  }
  .container .search{
    margin-top: 10px;
    margin-bottom: 10px;
  }
  
  .container .tasklist li{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background-color: #f8f8f8;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 10px;
    transition: all 0.3s ease;
    &:hover {
      transform: translateY(-5px);
    }
  }
  .container  .footer{
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #ccc;
    font-size: 14px;
  }
  